Firearm



w. J. MORRISON.

FIREARIVI.

APPLICATION FILED MAR. 22, |918.

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W. '1. MORRISON.

FIREARM.

MPLlcATloN FILED MAR. 22. 191s.

Patented Nov. 23, 1920.

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WILLIAM JAMES MORRISON, F TORONTO, ONTARIO, CANADA.,4

FIREARM.

Speeication of Letters Patent.

Patented-Nov. 423, 1920.

Application led March 22, 1918. Serial No. 228,905.

To all whom t may concern.'

Be it known that 1W1LLIAM JAMES MoR- msoN, a subject of the Kin of GreatBritain, residing at Toronto, rovince of 0ntario, Dominion of Canada,have invented certain new and useful Improvements in Firearms, of whichthe following is a specification.

This invention relates more particularly to an automatic, or gasoperated, irearm of the repeating type, such as disclosed in mycompanion application filed December 7, 1917, bearing Serial Number205971.

Theobject of the present invention is to furnish a firearm of theabove'type with a stockl that may be easily and quickly converted into apolyped gun support or rest for the. barrel of the gun, to facilitatesupporting and accurately aiming the-gun.

A further object of the invention is the provision of novel means forAdetachably connecting the stock parts to a pistol handle section of thefirearm.

The above and other objects are attained by a mechanical constructionthat will be hereinafter specifically described and then claimed,reference being directed to the drawings which illustrate the inventionin one of its' applications and adaptations, in which;

Fi re 1 is a sideelevation of a portion of the firearm on the line 1-+1Fig. 6, partly in section;

Fig. 1A is a longitudinal sectional view -of the barrel portion ofthefirearm;

Fig. 2 is an enlarged detail view, partly in plan and partly in sectionof the barrel portion of the firearm;

Fig. 3 is a viewv similar to Fig. 1 showing the position of parts forplacing a cartridge in a barrel;

Fig. 4 is a horizontal sectional view of the breech portion of theirearm, partly in plan;

Fig. 5 is a similar view showing a cartridge ejeoting and holdingmechanism; and

Fig. 6 is a cross sectional view of a portion of the firearm on the line6--6 Figs. 1 and 2 showing the'portion of the stock in position as atripod or rest.

Similar numerals 'of reference indicate corresponding parts in theseveral views.

In the drawings and L51 denote portions of a stock having the inner endsthere. of pivotally connected or hinged, as at 52 and the portions 50and51 articulated by toggle members 68 that will retain the portions intripod or rest form, as shown in Fig; .6.

he portion 51 has an apertured lug 61 adapted to engage the pistolhandle 62 of the breech portion 12 of the firearm. The* pistol handle 62has an` opening and recess 58 providing clearance for a locking pin 57,said pin having a head 59 in the recess of the pistol handle engaged bya spring 60, which holds the locking pin normally retracted. The lowerend of the locking pin v is adapted-to engage in the apertured lug 61and is forced therein by a stud 56 on a lever 53, pivoted, as at 54:, ina recess of the stock .portion 50. A spring 55 in the stock por- 'tion50 holds the outer end of the lever flush .ment with the pistol handle.

The lower portion of the fore stock 17 has a curved locking pin 65provided with a shoulder 67 and spring 66, and with the stock portions50 and 51 in polyped gun support or rest formation, as shown in Fig. '6,the

curvedlocking pin 65 is adapted to engage in the apertured lug 61 andAbe retained therein by the stud 56 of the lever 53 carried bythe stockportion 50. It is therefore apparent that the gun may rest upon thepolyped support or rest afforded by the stock portions 50 and 51 and maybe properly sighted by tilting the gun through the medium of a pistolhandle 62. This novel gun stock 'permits of a shoulder firearm, beinreadily converted intoa polyped supporte gun.

Considering the remaining portions of the firearm, which have beendescribed in detail in my companion a plication, bearing Serial No.205,971, filed ecember 7, 1917, 15 denotes a trigger which when pulledupon releases the hammer 14' and this hammer strikes a firing pin 63which in turn strikes the cap of the cartridge in the chamber-of thebarrel 11, exploding the cartridge and driving the bullet out of thebarrel. An enormous pressure is instantly generated by the gases of theexplosion and these gases under pressure will enter the port 32 of thebarrel 11, pass through a port 31 and impinge against a piston head 28in the cylinder 27. The head 33 of the cylinder has check valve partsand in connection with the port 34. When the pistonhead 28 is movedbackwardly the spring 37 1s placed under compression and the bridle 18is azine 16 in position. At the same time, the

piston head 28 is forced forward and the air which has entered thecylinder through the port 34, following the creation of a vacuum behindthe piston head is forced through the port 32 and exhausts through themuzzle of the gun, producing a suction which scavenges the barrel 11 andreplaces the hot gases with cool air drawn through the chamber. Theloading action is the reverse of the firing action, except that a newcartridge is obtained from the magazine. As these cartridges are usedthe final cartridge is left in the chamber, but not fired until theempty magazine has been vreplaced y by a full one. A conventional formof magazine block has been shown and after the magazine is in position,the gun is ready for firing.

Other reference numerals of the drawing designate similar parts referredto in my companion application Serial Number 205,971.

Although the detailed description of the arm isV described and claimedin my copending application Serial Number 205,971 and is shown anddescribed in the present application in connection with the same, it isnot intended to be limited thereby as the present invention may becombined with a gun or firearm of any description to which it may be'applicable and adaptable, and which may be provided with the pinactuated securing member in such a manner as to co-act and cooperatewith and between the firearm and the present invention to providea meansfor attachably and detachab securing the combination.

aving now described my invention what I claim is 1': A firearm having adetachable stock, comprising a movable polyped portion adapted forsupporting the barrel portion of the firearm, a locking pin carried by aportion of the firearm, means carried by the stock to cooperate with thelocking pin for detachably securing the stock to the firearm,

and a spring actuated lever to hold the pin and locking meansinoperative position.

2. In a firearm, a detachable bifurcated 4. In a firearm having a pistolhandle, a

detachable, bifurcated stock, a barrel inember, Vlocking means disposedat the pistol handle and adapted for holding the stock in engagementwith the barrel, and a locking means comprising a locking pin and acoacting and coperating spring-actuated lever, said locking meanscommunicating with the stock and the barrel members in such a manner asto co-act and cooperate in detachably locking the barrel to the stock.

5. The combination of a firearm, locking pins carried by portionsthereof, a bifurcated stock adapted for attachment to the locking pinportions' of the firearm, and means carried by the stock adapted toactuate the locking pins to hold the stock in engagement with portionsof the firearm.

6. The combination with a firearm having a pistol handle of a lockingpin carried by thel pistol handle, a swinging bifurcated stockdetachably held by 'said locking pin and adapted as a polyped restmember when attached, and spring actuated means carried `by the stockadapted for connecting the converted stock to a barrel portion of thefirearm as a rest member therefor.

7. The combination of 'a firearm, locking pins carried by portionsthereof, a bifurcated stock adapted for attachment to the locking pinportions of the firearm, and

spring means carried by the stock adapted to actuate the lockingV pinsto hold theA stock in engagement with portions of the firearm.

In testimony whereof, I afiix my signature in the presence of twowitnesses.

WILLIAM JAMES MORRISON. Witnesses:

WALTER D. KEMP, F. L. WHRITNER.

